Police investigated a tractor-trailer left unattended near a U.S. Navy support facility in Northeast Philadelphia.

Traffic was being detoured away from the area.

The tractor-trailer is parked near Naval Support Activity Philadelphia, a U.S. military facility.

The facility's website describes its mission this way:

NSA Philadelphia/PNY mission is to provide an operationally ready, secure shore infrastructure built upon a streamlined shore installation management organization committed to quality of life to our military members and civilian staffs and quality of community developed through extensive interaction and involvement with the community.